We derive our intuition behind the universal detection from the common features or artifacts that are (probably) shared among different diffusion models.
Since some features or artifacts shared across different GAN models have been verified in previous work [1]}, [2]}, [3]}, [4]}, [5]}.
We believe that diffusion models also hold the same or similar property as GAN models, there are also some shared features or artifacts among different diffusion models.
To verify it, we perform a simple yet promising research approach where we investigate whether it is possible to perform forensic detection on images from the one diffusion model that generalizes to images from many unseen models.
